1 files changed, 7 insertions, 420 deletions

diff --git a/drivers/gpu/drm/bochs/bochs_mm.c b/drivers/gpu/drm/bochs/bochs_mm.c
index 807c80f1f024..8f9bb886f7ad 100644
--- a/drivers/gpu/drm/bochs/bochs_mm.c
+++ b/drivers/gpu/drm/bochs/bochs_mm.c
@@ -4,435 +4,22 @@
 
 #include "bochs.h"
 
-static void bochs_ttm_placement(struct bochs_bo *bo, int domain);
-
 /* ---------------------------------------------------------------------- */
 
-static inline struct bochs_device *bochs_bdev(struct ttm_bo_device *bd)
-{
-	return container_of(bd, struct bochs_device, ttm.bdev);
-}
-
-static void bochs_bo_ttm_destroy(struct ttm_buffer_object *tbo)
-{
-	struct bochs_bo *bo;
-
-	bo = container_of(tbo, struct bochs_bo, bo);
-	drm_gem_object_release(&bo->gem);
-	kfree(bo);
-}
-
-static bool bochs_ttm_bo_is_bochs_bo(struct ttm_buffer_object *bo)
-{
-	if (bo->destroy == &bochs_bo_ttm_destroy)
-		return true;
-	return false;
-}
-
-static int bochs_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
-				  struct ttm_mem_type_manager *man)
-{
-	switch (type) {
-	case TTM_PL_SYSTEM:
-		man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
-		man->available_caching = TTM_PL_MASK_CACHING;
-		man->default_caching = TTM_PL_FLAG_CACHED;
-		break;
-	case TTM_PL_VRAM:
-		man->func = &ttm_bo_manager_func;
-		man->flags = TTM_MEMTYPE_FLAG_FIXED |
-			TTM_MEMTYPE_FLAG_MAPPABLE;
-		man->available_caching = TTM_PL_FLAG_UNCACHED |
-			TTM_PL_FLAG_WC;
-		man->default_caching = TTM_PL_FLAG_WC;
-		break;
-	default:
-		DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
-		return -EINVAL;
-	}
-	return 0;
-}
-
-static void
-bochs_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
-{
-	struct bochs_bo *bochsbo = bochs_bo(bo);
-
-	if (!bochs_ttm_bo_is_bochs_bo(bo))
-		return;
-
-	bochs_ttm_placement(bochsbo, TTM_PL_FLAG_SYSTEM);
-	*pl = bochsbo->placement;
-}
-
-static int bochs_bo_verify_access(struct ttm_buffer_object *bo,
-				  struct file *filp)
-{
-	struct bochs_bo *bochsbo = bochs_bo(bo);
-
-	return drm_vma_node_verify_access(&bochsbo->gem.vma_node,
-					  filp->private_data);
-}
-
-static int bochs_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
-				    struct ttm_mem_reg *mem)
-{
-	struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
-	struct bochs_device *bochs = bochs_bdev(bdev);
-
-	mem->bus.addr = NULL;
-	mem->bus.offset = 0;
-	mem->bus.size = mem->num_pages << PAGE_SHIFT;
-	mem->bus.base = 0;
-	mem->bus.is_iomem = false;
-	if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
-		return -EINVAL;
-	switch (mem->mem_type) {
-	case TTM_PL_SYSTEM:
-		/* system memory */
-		return 0;
-	case TTM_PL_VRAM:
-		mem->bus.offset = mem->start << PAGE_SHIFT;
-		mem->bus.base = bochs->fb_base;
-		mem->bus.is_iomem = true;
-		break;
-	default:
-		return -EINVAL;
-		break;
-	}
-	return 0;
-}
-
-static void bochs_ttm_io_mem_free(struct ttm_bo_device *bdev,
-				  struct ttm_mem_reg *mem)
-{
-}
-
-static void bochs_ttm_backend_destroy(struct ttm_tt *tt)
-{
-	ttm_tt_fini(tt);
-	kfree(tt);
-}
-
-static struct ttm_backend_func bochs_tt_backend_func = {
-	.destroy = &bochs_ttm_backend_destroy,
-};
-
-static struct ttm_tt *bochs_ttm_tt_create(struct ttm_buffer_object *bo,
-					  uint32_t page_flags)
-{
-	struct ttm_tt *tt;
-
-	tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);
-	if (tt == NULL)
-		return NULL;
-	tt->func = &bochs_tt_backend_func;
-	if (ttm_tt_init(tt, bo, page_flags)) {
-		kfree(tt);
-		return NULL;
-	}
-	return tt;
-}
-
-static struct ttm_bo_driver bochs_bo_driver = {
-	.ttm_tt_create = bochs_ttm_tt_create,
-	.init_mem_type = bochs_bo_init_mem_type,
-	.eviction_valuable = ttm_bo_eviction_valuable,
-	.evict_flags = bochs_bo_evict_flags,
-	.move = NULL,
-	.verify_access = bochs_bo_verify_access,
-	.io_mem_reserve = &bochs_ttm_io_mem_reserve,
-	.io_mem_free = &bochs_ttm_io_mem_free,
-};
-
 int bochs_mm_init(struct bochs_device *bochs)
 {
-	struct ttm_bo_device *bdev = &bochs->ttm.bdev;
-	int ret;
+	struct drm_vram_mm *vmm;
 
-	ret = ttm_bo_device_init(&bochs->ttm.bdev,
-				 &bochs_bo_driver,
-				 bochs->dev->anon_inode->i_mapping,
-				 true);
-	if (ret) {
-		DRM_ERROR("Error initialising bo driver; %d\n", ret);
-		return ret;
-	}
-
-	ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
-			     bochs->fb_size >> PAGE_SHIFT);
-	if (ret) {
-		DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
-		return ret;
-	}
-
-	bochs->ttm.initialized = true;
-	return 0;
+	vmm = drm_vram_helper_alloc_mm(bochs->dev, bochs->fb_base,
+				       bochs->fb_size,
+				       &drm_gem_vram_mm_funcs);
+	return PTR_ERR_OR_ZERO(vmm);
 }
 
 void bochs_mm_fini(struct bochs_device *bochs)
 {
-	if (!bochs->ttm.initialized)
+	if (!bochs->dev->vram_mm)
 		return;
 
-	ttm_bo_device_release(&bochs->ttm.bdev);
-	bochs->ttm.initialized = false;
-}
-
-static void bochs_ttm_placement(struct bochs_bo *bo, int domain)
-{
-	unsigned i;
-	u32 c = 0;
-	bo->placement.placement = bo->placements;
-	bo->placement.busy_placement = bo->placements;
-	if (domain & TTM_PL_FLAG_VRAM) {
-		bo->placements[c++].flags = TTM_PL_FLAG_WC
-			| TTM_PL_FLAG_UNCACHED
-			| TTM_PL_FLAG_VRAM;
-	}
-	if (domain & TTM_PL_FLAG_SYSTEM) {
-		bo->placements[c++].flags = TTM_PL_MASK_CACHING
-			| TTM_PL_FLAG_SYSTEM;
-	}
-	if (!c) {
-		bo->placements[c++].flags = TTM_PL_MASK_CACHING
-			| TTM_PL_FLAG_SYSTEM;
-	}
-	for (i = 0; i < c; ++i) {
-		bo->placements[i].fpfn = 0;
-		bo->placements[i].lpfn = 0;
-	}
-	bo->placement.num_placement = c;
-	bo->placement.num_busy_placement = c;
-}
-
-int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag)
-{
-	struct ttm_operation_ctx ctx = { false, false };
-	int i, ret;
-
-	if (bo->pin_count) {
-		bo->pin_count++;
-		return 0;
-	}
-
-	bochs_ttm_placement(bo, pl_flag);
-	for (i = 0; i < bo->placement.num_placement; i++)
-		bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
-	ret = ttm_bo_reserve(&bo->bo, true, false, NULL);
-	if (ret)
-		return ret;
-	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
-	ttm_bo_unreserve(&bo->bo);
-	if (ret)
-		return ret;
-
-	bo->pin_count = 1;
-	return 0;
-}
-
-int bochs_bo_unpin(struct bochs_bo *bo)
-{
-	struct ttm_operation_ctx ctx = { false, false };
-	int i, ret;
-
-	if (!bo->pin_count) {
-		DRM_ERROR("unpin bad %p\n", bo);
-		return 0;
-	}
-	bo->pin_count--;
-
-	if (bo->pin_count)
-		return 0;
-
-	for (i = 0; i < bo->placement.num_placement; i++)
-		bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
-	ret = ttm_bo_reserve(&bo->bo, true, false, NULL);
-	if (ret)
-		return ret;
-	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
-	ttm_bo_unreserve(&bo->bo);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
-int bochs_mmap(struct file *filp, struct vm_area_struct *vma)
-{
-	struct drm_file *file_priv = filp->private_data;
-	struct bochs_device *bochs = file_priv->minor->dev->dev_private;
-
-	return ttm_bo_mmap(filp, vma, &bochs->ttm.bdev);
-}
-
-/* ---------------------------------------------------------------------- */
-
-static int bochs_bo_create(struct drm_device *dev, int size, int align,
-			   uint32_t flags, struct bochs_bo **pbochsbo)
-{
-	struct bochs_device *bochs = dev->dev_private;
-	struct bochs_bo *bochsbo;
-	size_t acc_size;
-	int ret;
-
-	bochsbo = kzalloc(sizeof(struct bochs_bo), GFP_KERNEL);
-	if (!bochsbo)
-		return -ENOMEM;
-
-	ret = drm_gem_object_init(dev, &bochsbo->gem, size);
-	if (ret) {
-		kfree(bochsbo);
-		return ret;
-	}
-
-	bochsbo->bo.bdev = &bochs->ttm.bdev;
-	bochsbo->bo.bdev->dev_mapping = dev->anon_inode->i_mapping;
-
-	bochs_ttm_placement(bochsbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);
-
-	acc_size = ttm_bo_dma_acc_size(&bochs->ttm.bdev, size,
-				       sizeof(struct bochs_bo));
-
-	ret = ttm_bo_init(&bochs->ttm.bdev, &bochsbo->bo, size,
-			  ttm_bo_type_device, &bochsbo->placement,
-			  align >> PAGE_SHIFT, false, acc_size,
-			  NULL, NULL, bochs_bo_ttm_destroy);
-	if (ret)
-		return ret;
-
-	*pbochsbo = bochsbo;
-	return 0;
-}
-
-int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel,
-		     struct drm_gem_object **obj)
-{
-	struct bochs_bo *bochsbo;
-	int ret;
-
-	*obj = NULL;
-
-	size = PAGE_ALIGN(size);
-	if (size == 0)
-		return -EINVAL;
-
-	ret = bochs_bo_create(dev, size, 0, 0, &bochsbo);
-	if (ret) {
-		if (ret != -ERESTARTSYS)
-			DRM_ERROR("failed to allocate GEM object\n");
-		return ret;
-	}
-	*obj = &bochsbo->gem;
-	return 0;
-}
-
-int bochs_dumb_create(struct drm_file *file, struct drm_device *dev,
-		      struct drm_mode_create_dumb *args)
-{
-	struct drm_gem_object *gobj;
-	u32 handle;
-	int ret;
-
-	args->pitch = args->width * ((args->bpp + 7) / 8);
-	args->size = args->pitch * args->height;
-
-	ret = bochs_gem_create(dev, args->size, false,
-			       &gobj);
-	if (ret)
-		return ret;
-
-	ret = drm_gem_handle_create(file, gobj, &handle);
-	drm_gem_object_put_unlocked(gobj);
-	if (ret)
-		return ret;
-
-	args->handle = handle;
-	return 0;
-}
-
-static void bochs_bo_unref(struct bochs_bo **bo)
-{
-	struct ttm_buffer_object *tbo;
-
-	if ((*bo) == NULL)
-		return;
-
-	tbo = &((*bo)->bo);
-	ttm_bo_put(tbo);
-	*bo = NULL;
-}
-
-void bochs_gem_free_object(struct drm_gem_object *obj)
-{
-	struct bochs_bo *bochs_bo = gem_to_bochs_bo(obj);
-
-	bochs_bo_unref(&bochs_bo);
-}
-
-int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
-			   uint32_t handle, uint64_t *offset)
-{
-	struct drm_gem_object *obj;
-	struct bochs_bo *bo;
-
-	obj = drm_gem_object_lookup(file, handle);
-	if (obj == NULL)
-		return -ENOENT;
-
-	bo = gem_to_bochs_bo(obj);
-	*offset = bochs_bo_mmap_offset(bo);
-
-	drm_gem_object_put_unlocked(obj);
-	return 0;
-}
-
-/* ---------------------------------------------------------------------- */
-
-int bochs_gem_prime_pin(struct drm_gem_object *obj)
-{
-	struct bochs_bo *bo = gem_to_bochs_bo(obj);
-
-	return bochs_bo_pin(bo, TTM_PL_FLAG_VRAM);
-}
-
-void bochs_gem_prime_unpin(struct drm_gem_object *obj)
-{
-	struct bochs_bo *bo = gem_to_bochs_bo(obj);
-
-	bochs_bo_unpin(bo);
-}
-
-void *bochs_gem_prime_vmap(struct drm_gem_object *obj)
-{
-	struct bochs_bo *bo = gem_to_bochs_bo(obj);
-	bool is_iomem;
-	int ret;
-
-	ret = bochs_bo_pin(bo, TTM_PL_FLAG_VRAM);
-	if (ret)
-		return NULL;
-	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
-	if (ret) {
-		bochs_bo_unpin(bo);
-		return NULL;
-	}
-	return ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
-}
-
-void bochs_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
-{
-	struct bochs_bo *bo = gem_to_bochs_bo(obj);
-
-	ttm_bo_kunmap(&bo->kmap);
-	bochs_bo_unpin(bo);
-}
-
-int bochs_gem_prime_mmap(struct drm_gem_object *obj,
-			 struct vm_area_struct *vma)
-{
-	struct bochs_bo *bo = gem_to_bochs_bo(obj);
-
-	bo->gem.vma_node.vm_node.start = bo->bo.vma_node.vm_node.start;
-	return drm_gem_prime_mmap(obj, vma);
+	drm_vram_helper_release_mm(bochs->dev);
 }